//
// Created by william on 1/6/24.
//

#ifndef NESEMULATOR_MEMORY_VIEW_H
#define NESEMULATOR_MEMORY_VIEW_H

#include <panel.h>
#include "../include/types.h"

#define MEMORY_VIEW_HEIGHT 19
#define MEMORY_VIEW_WIDTH 56
#define MEMORY_VIEW_LINE_COUNT 0xf
#define MEMORY_VIEW_LINE_BYTE_COUNT 0xf
#define MEMORY_VIEW_BYTE_COUNT 0xff

#define MEMORY_VIEW_DIRECTION_UP 1
#define MEMORY_VIEW_DIRECTION_DOWN (-1)
#define MEMORY_VIEW_DIRECTION_RIGHT 1
#define MEMORY_VIEW_DIRECTION_LEFT (-1)

typedef struct memory_view {
    PANEL *panel;
    byte *ram;
    address base_address;
    char cursor_x;
    char cursor_y;
} MemoryView;

/**
 * Initializes a memory view for a system RAM.
 * The viewer base address will be set to 0x0000, and the cursor (0, 0).
 * The content of the memory will be printed on a new curses window.
 * @param view A pointer to the view to initialize
 * @param ram A pointer to the RAM
 */
void memory_view_init(MemoryView *view, ram ram, int x, int y);

/**
 * Prints the RAM content from the viewer base address.
 *
 * @param view
 */
void memory_view_print(MemoryView *view);

/**
 * Sets the viewer base address to the target address page (the first byte) and prints the RAM.
 *
 * @param view
 * @param target The target address to print
 */
void memory_view_goto(MemoryView *view, address target);

/**
 * Scrolls the base address up or down by steps of 0x10.
 *
 * @param view
 * @param direction The scroll direction
 */
void memory_view_scroll(MemoryView *view, char direction);

/**
 * Moves the cursor up, down, right or left.
 *
 * @param view
 * @param horizontal
 * @param vertical
 */
void memory_view_move_cursor(MemoryView *view, char horizontal, char vertical);

/**
 * Moves the cursor to a specific memory address.
 * The view will not be scrolled if the target address is not displayed.
 *
 * @param view
 * @param target
 */
void memory_view_set_cursor_addr(MemoryView *view, address target);

#endif //NESEMULATOR_MEMORY_VIEW_H